Resizing images with GD

[rupertbj]

I have encountered the following errors:

Warning: imagecopyresampled(): supplied argument is not a valid Image resource in /home/fhlinux197/r/rupstar.com/user/htdocs/fupload.php on line 20

and

Warning: imagejpeg(): supplied argument is not a valid Image resource in /home/fhlinux197/r/rupstar.com/user/htdocs/fupload.php on line 21

I have the following script:

<?php
	header('Content-type: image/jpeg');
	$file_dir = "/home/fhlinux197/r/rupstar.com/user/htdocs/images"; 
	$file_url = "http://www.rupstar.com/images/"; 
		print "path: $fupload<br>\n";
		print "name: $fupload_name<br>\n";
		print "size: $fupload_size bytes<br>\n";
		print "type: $fupload_type<p>\n\n";
	copy ( $fupload, "$file_dir/$fupload_name" ) or die ("Couldn't copy");
$width = 320;
$height = 320;
list($width_orig, $height_orig) = getimagesize($fupload);
if ($width && ($width_orig < $height_orig)) {
   $width = ($height / $height_orig) * $width_orig;
} else {
   $height = ($width / $width_orig) * $height_orig;
}
$image_p = imagecreatetruecolor($width, $height);
$image = imagecreatefromjpeg($fupload);
imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);
imagejpeg($image_p, '', 60);
?>

Line 20 reads:

imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);

Line 21 reads:

imagejpeg($image_p, '', 60);

Your help is much appreciated as always!!!!!
Rupert

[onion2k]

Its failing to load the jpeg you've uploaded properly. Try other ones and see if it still fails.

[rupertbj]

The files are uploaded sucessfully into a sub directory called images.
do I need to redefine the file I am using - tell the program to use the saved file?

[Shawazi]

imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig); 

Your $image variable points to
imagecreatefromjpeg($fupload);

$fupload is the odd temporary name
it should point to $fupload_name

imagejpeg($image_p, '', 60);

why is your argument blank for that line?

here is an example from my code (with folder changes)
imagejpeg($target_id,"/home/folder/thumb_$detail2", 100);

my $detail_2 is equal to your $fupload_name
my $target_id is equal to your $image_p

[Shawazi]

$back = strtolower($backpic_name);

//// BACK PICTURE
copy("$backpic", "/home/account/public_html/images/back/$back");
$size = GetImageSize("/home/account/public_html/images/back/$back");
$source_id = imageCreateFromJPEG("/home/account/public_html/images/back/$back");
///Thumb
$dest_x = 45;
$dest_y = 62;
$target_id = imagecreatetruecolor($dest_x, $dest_y);
$target_pic = imagecopyresampled($target_id,$source_id, 0, 0, 0, 0, $dest_x, $dest_y, $size['0'],$size['1']);
imagejpeg($target_id,"/home/account/public_html/images/back/thumb/thumb_$back", 100);

[rupertbj]

I have amended the cose:

<?php
    header('Content-type: image/jpeg');
    $file_dir = "/home/fhlinux197/r/rupstar.com/user/htdocs/images";
    $file_url = "http://www.rupstar.com/images/";
        print "path: $fupload<br>\n";
        print "name: $fupload_name<br>\n";
        print "size: $fupload_size bytes<br>\n";
        print "type: $fupload_type<p>\n\n";
    copy ( $fupload, "$file_dir/$fupload_name" ) or die ("Couldn't copy");
$width = 320;
$height = 320;
list($width_orig, $height_orig) = getimagesize($fupload);
if ($width && ($width_orig < $height_orig)) {
   $width = ($height / $height_orig) * $width_orig;
} else {
   $height = ($width / $width_orig) * $height_orig;
}
$image_p = imagecreatetruecolor($width, $height);
$image = imagecreatefromjpeg($fupload);
imagecopyresampled($image_p, $fupload_name, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);
imagejpeg($image_p, $file_dir/$fupload_name, 60);
?>

and i get the following outputted to screen:

path: /tmp/phpFAAhDM<br>
name: IMG_0032.JPG<br>
size: 718843 bytes<br>
type: image/pjpeg<p>

<br />
<b>Fatal error</b>: Allowed memory size of 8388608 bytes exhausted (tried to allocate 6400 bytes) in <b>/home/fhlinux197/r/rupstar.com/user/htdocs/fupload.php</b> on line <b>19</b><br />

Surely GD can deal with pics from a lowly 2.1 Megapixel digital camera??!??!?! Otherwise, I'll just have to resize any pics manually!!!!

Thanks

Rupert